We have to hydrotest a new ULSD shipping line. The pipe is approximately 10,000 ft in length. The pipe is to be hydrotested in April, 2006. As we are located on the eastern coast of Canada there are concerns about hydrotesting with water. Thus we are considering other mediums for hydrotest fluid. One idea floating around is to use ethylene glycol. However, this would require a significant amount of EG and then there are disposal concerns. I would like to know if anyone out there has expeience with hydrotesting in cold months and if you have any suggestions.
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